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| Number | Title | Issue Date |
| 5401230 | Numerically controlled machine tool and machining method thereof On a frame, a headstock and a tool rest are provided being free to relatively move so as to perform machining operations. The headstock is rotatably provided with spindle. The spindle is provided with a workpiece gripping means. One or more than one bar s... | 03/28/1995 |
| 5359175 | Laser machining system Laser machining system including a laser machine, a stack yard for storing pallets, a stacker crane for transferring pallets. Standard pallets and multi-pallets are stored in the stack yard. The standard pallet has a pallet base and plates are piled on th... | 10/25/1994 |